12.Chiba.ken, Life expectancy at birth (period, 1x5) Last modified:2023-12-05, ver.004_004 JMD(IPSS) Year Female Male Total 1947-1949 58.31 53.13 55.71 1950-1954 63.11 59.32 61.23 1955-1959 67.85 63.22 65.52 1960-1964 71.36 66.15 68.72 1965-1969 74.04 68.51 71.25 1970-1974 75.83 70.43 73.12 1975-1979 77.87 72.81 75.36 1980-1984 79.64 74.36 77.04 1985-1989 81.48 75.84 78.71 1990-1994 82.37 76.55 79.50 1995-1999 83.49 77.30 80.42 2000-2004 84.93 78.41 81.70 2005-2009 85.73 79.23 82.50 2010-2014 86.31 80.18 83.26 2015-2019 87.11 81.10 84.09 2020-2022 87.31 81.29 84.26